diff --git a/README.md b/README.md
index f5bc528..30f8618 100644
--- a/README.md
+++ b/README.md
@@ -22,7 +22,7 @@ The documentation is available [here](https://autosar-e2e.readthedocs.io/en/late
 This library provides fast C implementations of the E2E CRC algorithms and E2E profiles. 
 
 Currently, all relevant CRC algorithms are available in module `e2e.crc`
-but only E2E profiles 1, 2 and 5 are available. 
+but only E2E profiles 1, 2, 4 and 5 are available. 
 If you provide example data for the other profiles I would try to implement them, too.
 
 ## Installation
diff --git a/pyproject.toml b/pyproject.toml
index 724aa7d..1cd21ba 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: Implementation :: CPython",
 ]
 dependencies = []